Los Angeles: Actor Johnny Depp has hosted a memorial dinner for his late mother. The 53-year-old was joined by his daughter, Lily-Rose, 17 and his son, John Christopher, 14, as he paid tribute to his mother, Betty Sue Palmer here on Wednesday, reports etonline.com. "A small group of close family and friends came in to have dinner and laugh and share memories of Johnny's mom. People in his party referred to it as 'a celebration of her life'," a source said. Palmer died at the age of 81 on May 20 following a long illness. Three days later Depp's wife Amber Heard, 30, filed for divorce claiming that her decision to file for divorce was prompted by Depp's physically attacking her with an iPhone, leaving her with a bruised eye.